of, concerning, caused by, amoebas

basic, natural

forming, of, the main, most important or useful part

elementary, fundamental

describing a situation when prices are rising

forceful

consisting of cells

basic, natural

helping to form (a complete thing)

constituent

having the power or right to make or alter a political constitution

component, part

of, at or in the beginning stage(s)

simple, basic

(of a person, character, argument etc) convincing, believable

effective, powerful

of great importance; basic

basic, important

(of a quality etc) possessed from birth and part of one's character

inherited, native

necessary for completeness

necessary, basic

(of value, quality) belonging to, existing within, what is essential and natural (not caused or produced from outside)

basic, inborn

of an organ or organs of the body; of, concerning, living plants and animals; produced without artificial fertilizers

basic, natural

coming first and preparing for what follows

introductory, initial

existing at or from the beginning

earliest

including the first stage only; undeveloped

basic, fundamental

basic; hidden but able to be found

fundamental, latent